/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.datayoo.moql.core.table;

import org.datayoo.moql.RecordSet;
import org.datayoo.moql.util.StringFormater;

import java.sql.ResultSet;
import java.util.Iterator;
import java.util.Map;

/**
 * @author Tang Tadin
 */
public abstract class ArrayIteratorFactory {
	
	@SuppressWarnings({"rawtypes", "unchecked"})
	public static Iterator<Object> getArrayIterator(Object o) {
		if (o.getClass().isArray()) {
			return new SystemArrayIterator(o);
		}
		if (o instanceof Map) {
			return new MapIterator((Map)o);
		}
		if (o instanceof Iterable) {
			return new IteratorIterator(((Iterable)o).iterator());
		}
		if (o instanceof ResultSet) {
			return new ResultSetIterator((ResultSet)o);
		}
		if (o instanceof RecordSet) {
			return new RecordSetIterator((RecordSet)o);
		}
		throw new IllegalArgumentException(
        StringFormater.format("Unsupport class '{}'!", o.getClass().getName()));
	}
}
